未定義的方法'嵌套屬性'爲型號

Question

我試圖創建2種類型的地址：接收地址和交付地址。爲此，我創建了一個與列表和訂單關聯的多態地址模型。我想在列表中創建新地址並使用字段爲訂單視圖創建新地址。出於某種原因，這只是在我創建列表時才起作用，當我嘗試創建訂單時，我會爲模型訂單獲取未定義的方法「地址」。

注意：以下代碼段中省略了不相關的代碼。

在我的形式觀點

address.rb

class Address < ApplicationRecord 
belongs_to :addressable, polymorphic: true, optional: true 
end 

listing.rb

class Listing < ApplicationRecord 
has_many :orders 
has_one :pickup_address, as: :addressable, class_name: "Address", dependent: :destroy 

accepts_nested_attributes_for :pickup_address 
end 

order.rb

class Order < ApplicationRecord 
belongs_to :listing 
has_one :delivery_address, as: :addressable, class_name: "Address", dependent: :destroy 

accepts_nested_attributes_for :delivery_address 
end 

我有

應用程序/視圖/列表/_form.h tml.erb

<%= form_for(setup_listing(@listing)) do |f| %> 
<%= f.label :description %> 
<%= f.text_area :description, class: 'form-control' %> 

<%= f.label :price %> 
<%= f.text_field :price, class: 'form-control' %> 

<%= f.fields_for :pickup_address do |u| %> 

    <%= u.label :city %> 
    <%= u.text_field :city, class: 'form-control' %> 

    <%= u.label :sector %> 
    <%= u.text_field :sector, class: 'form-control' %> 

    <%= u.label :line_1 %> 
    <%= u.text_field :line_1, class: 'form-control' %> 

    <%= u.label :line_2 %> 
    <%= u.text_field :line_2, class: 'form-control' %> 

    <% end %> 
<%= f.submit "submit", class: "btn btn-primary" %> 
<%end%> 

應用程序/視圖/命令/ _form.html.erb

<%= form_for([@listing, setup_order(@order)]) do |f| %> 
    <%= f.fields_for :delivery_address do |u| %> 

    <%= u.label :city %> 
    <%= u.text_field :city, class: 'form-control' %> 

    <%= u.label :sector %> 
    <%= u.text_field :sector, class: 'form-control' %> 

    <%= u.label :line_1 %> 
    <%= u.text_field :line_1, class: 'form-control' %> 

    <%= u.label :line_2 %> 
    <%= u.text_field :line_2, class: 'form-control' %> 

    <% end %> 
<%= f.submit "submit", class: "btn btn-primary" %> 
<%end%> 

注意，在功能的form_for的順序我使用方括號，因爲我從上市打造的順序。

的routes.rb

Rails.application.routes.draw do 
    resources :listings do 
    resources :orders 
    end 
end 

的setup_order /列表功能來自

應用程序/傭工/ form_helper.rb

module FormHelper 

    def setup_listing(listing) 
     listing.build_pickup_address if listing.pickup_address.nil? 
     listing 
    end 

    def setup_order(order) 
     order.build_delivery_address if order.delivery_address.nil? 
     order 
    end 

end 

，我用它來創建新如果這個地址不存在，請按照中的建議存在10。

我就確定

def create 
    @listing = current_user.listings.build(listing_params) 
    if @listing.save 
     flash[:success] = "listing created!" 
     redirect_to @listing 
    else 
     render 'new' 
    end 
    end 
    . 
    . 

    private 

    def listing_params 
    params.require(:listing).permit(pickup_address_attributes: [:city, :sector,:line_1, :line_2]) 
    end 

orders_controller.rb

. 
    . 
    def create 
    @listing = Listing.find(params[:listing_id]) 
    @order = @listing.orders.build(order_params) 
    if @order.save 
     redirect_to listings_path 
    else 
     render 'new' 
    end 
    end 
    . 
    . 
    private 

    def order_params 
    params.require(:order).permit(delivery_address_attributes: [:city, :sector, :line_1, :line_2]) 
    end 

再次添加地址屬性我PARAMS在控制器

listings_controller.rb，創建上市完美的作品。當我嘗試創建新訂單時，問題就會發生。先謝謝了！

完整跟蹤

activemodel (5.0.0) lib/active_model/attribute_methods.rb:433:in `method_missing' 
activemodel (5.0.0) lib/active_model/validator.rb:149:in `block in validate' 
activemodel (5.0.0) lib/active_model/validator.rb:148:in `each' 
activemodel (5.0.0) lib/active_model/validator.rb:148:in `validate' 
activesupport (5.0.0) lib/active_support/callbacks.rb:405:in `public_send' 
activesupport (5.0.0) lib/active_support/callbacks.rb:405:in `block in make_lambda' 
activesupport (5.0.0) lib/active_support/callbacks.rb:169:in `block (2 levels) in halting' 
activesupport (5.0.0) lib/active_support/callbacks.rb:547:in `block (2 levels) in default_terminator' 
activesupport (5.0.0) lib/active_support/callbacks.rb:546:in `catch' 
activesupport (5.0.0) lib/active_support/callbacks.rb:546:in `block in default_terminator' 
activesupport (5.0.0) lib/active_support/callbacks.rb:170:in `block in halting' 
activesupport (5.0.0) lib/active_support/callbacks.rb:454:in `block in call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:454:in `each' 
activesupport (5.0.0) lib/active_support/callbacks.rb:454:in `call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:101:in `__run_callbacks__' 
activesupport (5.0.0) lib/active_support/callbacks.rb:750:in `_run_validate_callbacks' 
activemodel (5.0.0) lib/active_model/validations.rb:408:in `run_validations!' 
activemodel (5.0.0) lib/active_model/validations/callbacks.rb:113:in `block in run_validations!' 
activesupport (5.0.0) lib/active_support/callbacks.rb:126:in `call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile' 
activesupport (5.0.0) lib/active_support/callbacks.rb:455:in `call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:101:in `__run_callbacks__' 
activesupport (5.0.0) lib/active_support/callbacks.rb:750:in `_run_validation_callbacks' 
activemodel (5.0.0) lib/active_model/validations/callbacks.rb:113:in `run_validations!' 
activemodel (5.0.0) lib/active_model/validations.rb:338:in `valid?' 
activerecord (5.0.0) lib/active_record/validations.rb:65:in `valid?' 
activerecord (5.0.0) lib/active_record/validations.rb:82:in `perform_validations' 
activerecord (5.0.0) lib/active_record/validations.rb:44:in `save' 
activerecord (5.0.0) lib/active_record/attribute_methods/dirty.rb:22:in `save' 
activerecord (5.0.0) lib/active_record/transactions.rb:319:in `block (2 levels) in save' 
activerecord (5.0.0) lib/active_record/transactions.rb:395:in `block in with_transaction_returning_status' 
activerecord (5.0.0) lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `block in transaction' 
activerecord (5.0.0) lib/active_record/connection_adapters/abstract/transaction.rb:189:in `within_new_transaction' 
activerecord (5.0.0) lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `transaction' 
activerecord (5.0.0) lib/active_record/transactions.rb:211:in `transaction' 
activerecord (5.0.0) lib/active_record/transactions.rb:392:in `with_transaction_returning_status' 
activerecord (5.0.0) lib/active_record/transactions.rb:319:in `block in save' 
activerecord (5.0.0) lib/active_record/transactions.rb:334:in `rollback_active_record_state!' 
activerecord (5.0.0) lib/active_record/transactions.rb:318:in `save' 
activerecord (5.0.0) lib/active_record/suppressor.rb:41:in `save' 
app/controllers/orders_controller.rb:45:in `create' 
actionpack (5.0.0) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action' 
actionpack (5.0.0) lib/abstract_controller/base.rb:188:in `process_action' 
actionpack (5.0.0) lib/action_controller/metal/rendering.rb:30:in `process_action' 
actionpack (5.0.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action' 
activesupport (5.0.0) lib/active_support/callbacks.rb:126:in `call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile' 
activesupport (5.0.0) lib/active_support/callbacks.rb:455:in `call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:101:in `__run_callbacks__' 
activesupport (5.0.0) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks' 
activesupport (5.0.0) lib/active_support/callbacks.rb:90:in `run_callbacks' 
actionpack (5.0.0) lib/abstract_controller/callbacks.rb:19:in `process_action' 
actionpack (5.0.0) lib/action_controller/metal/rescue.rb:20:in `process_action' 
actionpack (5.0.0) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action' 
activesupport (5.0.0) lib/active_support/notifications.rb:164:in `block in instrument' 
activesupport (5.0.0) lib/active_support/notifications/instrumenter.rb:21:in `instrument' 
activesupport (5.0.0) lib/active_support/notifications.rb:164:in `instrument' 
actionpack (5.0.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action' 
actionpack (5.0.0) lib/action_controller/metal/params_wrapper.rb:248:in `process_action' 
searchkick (1.3.5) lib/searchkick/logging.rb:153:in `process_action' 
activerecord (5.0.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (5.0.0) lib/abstract_controller/base.rb:126:in `process' 
actionview (5.0.0) lib/action_view/rendering.rb:30:in `process' 
actionpack (5.0.0) lib/action_controller/metal.rb:190:in `dispatch' 
actionpack (5.0.0) lib/action_controller/metal.rb:262:in `dispatch' 
actionpack (5.0.0) lib/action_dispatch/routing/route_set.rb:50:in `dispatch' 
actionpack (5.0.0) lib/action_dispatch/routing/route_set.rb:32:in `serve' 
actionpack (5.0.0) lib/action_dispatch/journey/router.rb:39:in `block in serve' 
actionpack (5.0.0) lib/action_dispatch/journey/router.rb:26:in `each' 
actionpack (5.0.0) lib/action_dispatch/journey/router.rb:26:in `serve' 
actionpack (5.0.0) lib/action_dispatch/routing/route_set.rb:725:in `call' 
rack (2.0.1) lib/rack/etag.rb:25:in `call' 
rack (2.0.1) lib/rack/conditional_get.rb:38:in `call' 
rack (2.0.1) lib/rack/head.rb:12:in `call' 
rack (2.0.1) lib/rack/session/abstract/id.rb:222:in `context' 
rack (2.0.1) lib/rack/session/abstract/id.rb:216:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/cookies.rb:613:in `call' 
activerecord (5.0.0) lib/active_record/migration.rb:552:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call' 
activesupport (5.0.0) lib/active_support/callbacks.rb:97:in `__run_callbacks__' 
activesupport (5.0.0) lib/active_support/callbacks.rb:750:in `_run_call_callbacks' 
activesupport (5.0.0) lib/active_support/callbacks.rb:90:in `run_callbacks' 
actionpack (5.0.0) lib/action_dispatch/middleware/callbacks.rb:36:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/executor.rb:12:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/remote_ip.rb:79:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call' 
web-console (3.1.1) lib/web_console/middleware.rb:131:in `call_app' 
web-console (3.1.1) lib/web_console/middleware.rb:20:in `block in call' 
web-console (3.1.1) lib/web_console/middleware.rb:18:in `catch' 
web-console (3.1.1) lib/web_console/middleware.rb:18:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call' 
railties (5.0.0) lib/rails/rack/logger.rb:36:in `call_app' 
railties (5.0.0) lib/rails/rack/logger.rb:24:in `block in call' 
activesupport (5.0.0) lib/active_support/tagged_logging.rb:70:in `block in tagged' 
activesupport (5.0.0) lib/active_support/tagged_logging.rb:26:in `tagged' 
activesupport (5.0.0) lib/active_support/tagged_logging.rb:70:in `tagged' 
railties (5.0.0) lib/rails/rack/logger.rb:24:in `call' 
sprockets-rails (3.1.1) lib/sprockets/rails/quiet_assets.rb:13:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/request_id.rb:24:in `call' 
rack (2.0.1) lib/rack/method_override.rb:22:in `call' 
rack (2.0.1) lib/rack/runtime.rb:22:in `call' 
activesupport (5.0.0) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/executor.rb:12:in `call' 
actionpack (5.0.0) lib/action_dispatch/middleware/static.rb:136:in `call' 
rack (2.0.1) lib/rack/sendfile.rb:111:in `call' 
railties (5.0.0) lib/rails/engine.rb:522:in `call' 
puma (3.4.0) lib/puma/configuration.rb:224:in `call' 
puma (3.4.0) lib/puma/server.rb:569:in `handle_request' 
puma (3.4.0) lib/puma/server.rb:406:in `process_client' 
puma (3.4.0) lib/puma/server.rb:271:in `block in run' 
puma (3.4.0) lib/puma/thread_pool.rb:114:in `block in spawn_thread' 

Answer 1

沒有找到任何答案，我的問題後，我diceded的關係從HAS_ONE改變HAS_MANY，設置默認屬性名，看看有沒有什麼錯誤已經改變。

class Order < ApplicationRecord 

    belongs_to :listing 
    has_many :addresses, as: :addressable, dependent: :destroy 

    accepts_nested_attributes_for :delivery_address 

end 

我也改變了我的控制器和視圖的變化，而我又是越來越沒有方法，而不是「地址」，因爲它應該是「地址」。然後我意識到，我必須寫地址，所以我搜索@eeeeeean建議，並確實在驗證（我忽略了問題中考慮它們無關）我仍然有一個驗證地址，這裏是模型的實際代碼。

class Order < ApplicationRecord 
    validates :address, :seller_id, :buyer_id, :listing_id, presence: true 

    belongs_to :listing 
    belongs_to :buyer, class_name: "User" 
    belongs_to :seller, class_name: "User" 

    has_one :delivery_address, as: :addressable, class_name: "Address", dependent: :destroy 

    accepts_nested_attributes_for :delivery_address 

    enum status: [ :ordered, :shipped, :delivered, :rated ] 

end 

因此，請避免忽略問題中的代碼，並確保檢查您通常不會這樣做的地方。